Reviewed 22 September 2026
CS20 Case: the Classic Knife anniversary case
The anniversary case, released 18 October 2019, brings the Classic Knife as its rare shape.
The anniversary adds a knife shape
CS20 landed on 18 October 2019. Its rare special is the Classic Knife, a shape introduced with that update rather than one more Karambit. The covert rifle named most often from the collection is the FAMAS Commemoration, which in the buy menu is still just a FAMAS.
The CS20 collection carries an AWP covert of its own. Do not mix it up with the Operation Wildfire Case, a 2016 container built around the AK-47 Fuel Injector and the Bowie knife. Sharing a word does not make a shared case.
Gold odds: 0.26% per standard case
A standard weapon case hands out its rare slot roughly 0.26% of the time. Every other result sits on the wear ladder that the odds guide describes. Our take: a famous covert moves the red tier and does nothing for the gold chance.